AT&T has introduced a trio of HSPA+ 4G smartphones that will rival the other 4G handsets from T-Mobile Sprint and Verizon Wireless. The HTC Inspire 4G, Motorola Atrix 4G and Samsung Infuse 4G will carry the fight for the AT&T HSPA+ network.

Let's look into these new US 4G smartphones after the break.

HTC Inspire 4G: This Android smartphone features a 4.3-inch, WVGA touchscreen and an 8-megapixel camera with 2 LED flash lights. The Inspire 4G will also feature DLNA for networked home media collections, as well as mobile hotspot capabilities to connect up to 5 devices via Wi-Fi.READ

Samsung Infuse 4G: The HSPA+ 4G smartphone 4G features a 4.5-inch Super-AMOLED Plus touchscreen display. This upcoming AT&T cell phone also a 1.2 GHz single-core Hummingbird processor a 8 megapixel rear-facing camera with LED flash and HD recording, 1.2 megapixel front-facing camera, and Android 2.2. READ

Motorola Atrix 4G: The Atrix 4G is a powerful Android smartphone that features a Tegra dual-core processor, 1GB of RAM and support for up to 48GB of memory(16 GB internal memory, up to 32 GB external memory). This 4G smartphone also packs a 4.0 in QHD display with 24-bit color graphics, a 5 MP autofocus with LED flash and VGA front-facing camera in its 10.9mm thin shell. READ